Improvement in shields for naphtha-gas burners



new VMuseum.

SHIELDS FOR IAPHTHA K ens nunusns.

PATENTE JUL 25 1871 FIEL FIB."3.

PATENT OFFICE. v

HENRY H. EDGERTON, OF FORT WAYNE, INDIANA.

IMPROVEMENT IN SHIELDS FOR NAPHTHA-GAS BURNERS.

l Specification forming part of Letters Patent No. 117,396, dated July 25, 1871.

To all whom 'it may concern:

Be it known that I, HENRY H. EDGEETON, of Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification:

My invention has special relation to burners for naphtha gas in contradistinction to coal gas or carbureted air. In the use of such gas I have found that the upward currents of air, which, in the consumption of other kinds of gas, are allowed to pass directly up around the sides of theburners to the flame, are injurious and harmful, and I have therefore devised a shield which closes tightly around the burner at the bottom so as to prevent the entrance of air from that direction, and extends up so that its top shall be about level with or a little below the line which separates the illuminant and non-illuminant portions of the Haine. With a shield of this character the burning of the gas is much improved and a better llame is produced, and an elasticity is imparted to it in certain situations, as, for instance, in street-lamps, which could not be obtained were the shield open at the bottom or on the sides.

The manner in which my invention is or may be carried into eifect will be readily understood by reference to the accompanying drawing, in which- Figure 1 is a side elevation of a burner provided with a shield made in accordance with my invention. Fig. 2 is a transverse vertical section through the shield. Fig. 3 is a top view of the burner and shield. Fig. 4 is a side elevation of the burner and shield, representing the relation which the latter bears to the iialne.

The naphtha-gas burner A may be of any ordinary or suitable construction, and need not be further described. The shield B may be made of niet-al, as indicated in Figs. l, 2, and 3, or of glass, as seen in Fig. 4, or of other suitable material. At the bottom it is made cylindrical or of other shape to lit tightly and closely around the burner, so as to exclude all air from below, this being an essential feature of the shield, with out which it could not well be used for the purposes for which it is designed. The shield, above its cylindrical part, is ilattened and spread so as to follow to some extent the shape of the flame, and rises from a quarter to half an inch, more or less, above the turner-tip. rf the shield te made of metal it may be formed of two side pieces with Y lapped edges, as shown at a, b or it may be con- I am also aware that shields have been used for burners consuming coal gas or carbureted air, such, for instance, as shown in patents 21,733, of October l2, 1858, and 107,824, of September 27, 1870. But all these shields admit air from below directly to the flame, the air passing, in

the former case referred to, through the open sides of the shield, and in the latterI case through the open bottom of the shield. Either of the shields will answer for burning ordinary gas or carbureted air, but neither will serve for the burning of pure naphtha gas. In order to perfectly burn this gas it is necessary that the shield should be broad and llaring at the top and tightly 1 u closed at the bottom, so that, while excluding the air from below and detlecting the upward currents, air may at the same time have access to the flame in such quantity as to insure perfect combustion.

What I claim, and desire to secure by Letters Patent, is-.

A shield for naphtha-gas burners, made of glass, metal, or other material, with a neck to lit closely around or upon the burner so as to exclude air from below, and a broad or flaring upper air-defl ecting portion follo win g the general shape of the flame, and extending to or below the line between the illuminant and non-illuminant parts of the flame, as herein shown and set forth.

In testimony whereof I have signed my name to this specification before two subscribing witnesses.

HENRY H. EDGERTON. 4 Witnesses:

JAs. BEARD, WM. T. MANTHEY. 

